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A Long Beach resident shot and killed an intruder, and now the wife of the resident discusses what might be next for him. Gordon Tokumatsu reports for the NBC4 News at 5 p.m. on Thursday, July 24, 2014. (Published Thursday, July 24, 2014)

Tom Greer appeared to have no regret when he told NBC4 Wednesday night that he shot the woman twice in the back with his .22-caliber Smith and Wesson revolver as she was fleeing with a male accomplice.

The woman was identified as Andrea Miller, 28, from Long Beach. The male suspect was identified as Gus Adams, 26, of Long Beach. Adams was booked into jail on a robbery and murder charge, Long Beach police said in a press release.

"She says, 'Don't shoot me, I'm pregnant -- I'm going to have a baby.' And I shot her anyway," Greer said. "The lady didn't run as fast as the man so I shot her in the back twice, she's dead ... but he got away."

There was no immediate confirmation of the pregnancy, but the Los Angeles County coroner's office planned to perform an autopsy on the woman on Friday, said Ed Winter, of the coroner's office.

Long Beach police said they are investigating whether Greer should face charges for Tuesday night's shooting in the 3900 block of Country Club Drive.

Even though the woman was running away, Greer said he regards what he did as self-defense.

He said he arrived at home Tuesday night to find a couple in the middle of a late-night break-in when they attacked him.

"When I went in there, they tackled me," Greer told NBC4. "Both of them jumped up on top of me."

At one point, Miller stopped hitting Greer to help Adams break into a safe, police said.

While the suspects ransacked his home, Greer got his gun from another room, returned to confront them and fired his gun while they were still inside his house, police said.

Both suspects ran out, making off with items taken during the burglary. Greer followed them as they ran out and fired again.

Miller was struck by gunfire, fell in the alley, and died, authorities said. Adams got away, but was captured later.

The surviving suspect was arrested Wednesday on suspicion of residential burglary and murder, McDonnell said. The murder charge, which will be considered by the district attorney, is possible because Adams is accused of being involved in a felony that led to a death, McDonnell said.

It was not immediately clear whether Adams hired an attorney.

Greer told detectives he believes the suspects broke into his home and stole cash and property three times before, police said. Greer's estranged wife, Dorothy, said on Thursday one of the burglaries happened while she was at home. She saw her jewelry stolen.

But she never expected such violence.

"It's scary," she said. "Either way it goes, it's scary. It was just a bad situation, all the way around."

Greer was treated at a hospital Wednesday for a severe shoulder and collarbone injury.